// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

#include <ktest/ktest.h>

#include <nebula/testing/ktest_util.h>
#include <nebula/future/queue.h>

namespace nebula {
namespace util {

TEST(TestSpscQueue, TestMoveOnly) {
  SpscQueue<MoveOnlyDataType> queue(3);
  ASSERT_TRUE(queue.IsEmpty());
  ASSERT_FALSE(queue.IsFull());
  ASSERT_EQ(queue.SizeGuess(), 0);

  MoveOnlyDataType in(42);
  queue.write(std::move(in));
  ASSERT_FALSE(queue.IsEmpty());
  ASSERT_FALSE(queue.IsFull());
  ASSERT_EQ(queue.SizeGuess(), 1);

  queue.write(43);
  ASSERT_FALSE(queue.IsEmpty());
  ASSERT_TRUE(queue.IsFull());
  ASSERT_EQ(queue.SizeGuess(), 2);

  MoveOnlyDataType out = std::move(*queue.FrontPtr());
  ASSERT_EQ(42, *out.data);
  queue.PopFront();
  ASSERT_TRUE(queue.read(out));
  ASSERT_EQ(43, *out.data);

  ASSERT_TRUE(queue.IsEmpty());
  ASSERT_FALSE(queue.IsFull());
  ASSERT_EQ(queue.SizeGuess(), 0);
}

}  // namespace util
}  // namespace nebula
